Add a system for upgrading accounts using upgrade codes. Users purchase
an upgrade code off-site then redeem it on-site to upgrade their account
to Gold. Upgrade codes are randomly pre-generated and are one time use
only. Codes have enough randomness that guessing a code is infeasible.
* Add "general" rating.
* Rename "safe" rating to "sensitive".
* Change safe mode to include both rating:s and rating:g.
* Treat rating:safe as a synonym for rating:sensitive.
* Link "howto:rate" in the post edit form.
Add options to disable comments, the forum, and autocomplete. This is
for personal boorus and potentially for safe mode. Note that disabling
the forum may cause difficulties with creating and approving BURs.
Disabling comments and the forum merely hides them from most areas,
rather than completely removing them.
Refactor ratings to not be hardcoded in various places. Make it so
all ratings are defined in Post::RATINGS.
Also make it so that you can search multiple ratings at once with `rating:q,e`.
* Fix it so that if upgrades are disabled, only the payment button is disabled instead of the whole page.
* Fix it so that disabling upgrades with DANBOORU_USER_UPGRADES_ENABLED="false" works.
Factor out the Stripe code from the UserUpgrade class. Introduce a new
PaymentTransaction abstract class that represents a payment with some
payment processor, and a PaymentTransaction::Stripe class that
implements transactions with Stripe.
Note that we can't completely eliminate Stripe even though we no longer
accept payments with it because we still need to be able to look up old
payments in Stripe.
Fix#5154
Only add `toggle_tag` listener to links with the `search-tag` class,
add `target="_blank"` to wiki links to prevent accidentally leaving the
edit form.
Show a "This page has been removed because of a takedown request" error when
an unauthorized user searches for a banned tag, or tries to view a banned post.
This setting automatically added the `-status:deleted` metatag to all searches. This meant deleted
posts were filtered out at the database level, rather than at the html level. This way searches
wouldn't have less-than-full pages.
The cost was that searches were slower, mainly because post counts weren't cached. Normally when you
search for a tag, we can get the post count from the tags table. If the search is actually like
`touhou -status:deleted`, then we don't know the count and we have to calculate it on demand.
This option is being removed because it did the opposite of what people thought it did. People
thought it made deleted posts visible, when actually it made them more hidden.
Disable the ability to upgrade to Platinum. The Platinum level still
exists, but users can no longer upgrade to it. Sales of Platinum are
being disabled in preparation of increasing the tag limit for Gold
users.
